Electrical apparatus.



H. E. REEVE.

ELECTRICAL APPARATUS,

APPLICATION FILED JUNE 2, 1909.

1,080,584. Patented M119,` 1913.

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COLUMBIA PLANOGRAPH Co..w^s1llNu'roN. D c.

HENRY E. REEVE, 0F NEW YORK, N. Y.

ELECTRICAL APPARATUS.

Specification of Letters Patent.

Patented Dec. 9, 1 9113.

Application filed June 2, 1909. Serial No. 499,719.

To all 'whomz' may concern:

Be it known that I, HENRY E. Rnnvn, a citizen o:t' the United States, residing at New York, in the county of Kings and State of New York, have invented certain new and useful Improvements in Electrical Apparatus, of which the following is a specification.

This invention relates particularly to signaling devices such as electric bells.

In some classes of work it is necessary to protect the parts from gas, water, or other corroding influences and to avoid the collection of dust, dirt or other foreign impeding substances and also to prevent any combustible from being ignited by the spark of' the make and break. My mam object is to provide a simple and reliable construction in which the operating parts are properly housed.

The details of improvements reside in the casing containing an electromagnet and circuit contacts and means for transmitting motion from the armature on the inside to the striker on the outside; also in the means for supporting and protecting the striker arm; and also in the means for protecting the transmitting and the supporting mechanism.

The accompanying single sheet of drawings illustrates one form of the invention as applied to a double or duplex bell type. The construction of the operating mechanism is particularly adapted to this type but it will be obvious that it is applicable to a single bell type of either inside or outside stroke such as is common in the art.

Figure 1, is a front view of an electric bell construction embodying my invention, the front or cover of the casing being removed. Fig. 2, is a vertical section ot' the same, the cover being in place. Fig. 3, is a plan view of the same, the cap or top being removed. Fig. 1 is an enlarged section of a fragment of a detail.

The electromagnet 1 has an armature 2 for actuating the striker 3 and sounding one or more bells such as 4t, 4t. The circuit wires are led through a suitable watertight bushing 5 into the casing or box 6 and connected to binding posts 7 and, 8. The spring contact arm 9 normally presses against the adinstable contact screw 410 so that the circuit is closed through the coils of the magnet 1. Vhen the external circuit is closed ior instance through the switch or button 11, the l magnet is energized and draws the armature toward it. The hook 12 carried by the armature then pulls the contact arm 9 away from the contact screw 1() and breaks the circuit, and deenergizes the magnet. This releases the armature and allows the spring contact arm 9 to close upon the contact screw 10 and thus start up the vibration which actuates the striker and sounds the bell or bells. This is only one of many methods ot' making and breaking the circuit.

For the purpose of assembling, adjusting etc. the casing G is formed with an open front which is closed with a tight fitting cover 13 and suitable gasket or packine'. In the form shown the magnet is mounted in the casing along with the armature and contacts for convenience but in some cases it may be sufficient to simply mount the armature and contacts in the casing, the magnet being in a separate compartment or otherwise protected.

At the top of the casing is a flange 14; projecting upward. The yoke 15 has two trunnions or pivots 16 and 17 which are supported in notches in the front and rear of the flange 14. The rod 1S which extends thwugh the opening 19 in the top of the casing is supported by the yoke 15 and carries the depending armature 2. The striker 3 depends trom the yoke 15 at the rear and extends through a passage 20 in the flange and in the back of.E the casing 6. A pair of flanges like Q1 extend down the back of the casing at the sides of the striker to protect and shield the same. The yoke 15 and rod 18 constitute a lever connecting the armature and the striker.

To hermetically seal the casing where the rod 18 passes through, I provide a flexible metallic connection consisting of two thin plates or disks 22 and 23. These are con nected together at their peripheries by iold ing the edges back upon themselves with the edge oi one disk bent between the parallel folds as at 24 so that the joint is watertight without the use ot' any solder or bracing. The inner disk Q3 is connected to the casing around the passage 19 and the outer disk 22 is connected to the rod 18 adjacent the yoke 15. These disksV are considerably longer in the direction oi width of the casing` at right angles to the axis ot the pivots 16, 17 than in the direction ot the axis of the pivots. rlhe ends of the disks are rounded so that the shape approximates an Y nection.

ellipse. The short axis of the ellipse of the rim 24, between the planes of the disks, is the axis of greatest flexibility of the connection and corresponds substantially with the axis of the yoke pivots. `When properly constructed the disks are not only flexible but elastic and tend to hold the yoke and the attached armature and striker in the proper normal position and to return them thereto when ever displaced and that too without the use of any extra spring such as is commonly employed to oppose the action of the electromagnet. The short axis of the flexible connection is its natural axis of flexure so that the tilting of the armature about the axis of the pivots 16, 17 encounters the least resistance. The disks also sustain a considerable portion of the weight of the attached parts and to that extent relieve the pivots 16 and 17 and diminish the wear thereon.

Although the disks 22, 23 alone can support the armature 2 and striker 3, I prefer to also employ pivots such as 16, 17 as means for guiding the parts more accurately in their predetermined plane of oscillation.

A cap 25 secured to the flange 14 of the casing covers and protects the yoke and the flexible connection. One or more flanges or feet such as 26 and 27 project from the rear of the cap and casing for securing the construction to the wall or other support. The chamber between the cap and the top of the casing has no opening but the passage 2O which extends downward at the rear. There is thus but little chance of foreign substances interfering with the flexible conrlhe striker arm is also so located as to be protected against injury.

l/Vhat l claim is l. Apparatus comprising a casing containing the parts to be protected, a trans- 1 mitting lever passing through one wall of said casing, a duplex elastic metallic diaphragm connecting said lever and said casing, said diaphragm being of substantially greater length than width and more flexible `about its shorter axis, said lever being adapted to swing about said shorter axis in a plane at right angles thereto and means for swinging said lever in said plane and about said axis.

2. Apparatus comprising a casing containing the parts to be protected, a transmitting lever passing through one wall of said casing, a duplex elastic metallic diaphragm connecting said lever and said casing, said diaphragm being of substantially greater length than width and more flexible about its shorter axis, said lever being adapted to swing about said shorter axis in a plane at right angles thereto, means for swinging said lever in said plane and about said axis and means for preventing said lever from swinging in any other plane.

A3. AnA electric bell construction comprising a casing, a plate detachably secured to the front thereof, an electromagnet and an armature therefor inside said casing, said casing having a passage through the upper wall thereof, a flange projecting outwardly from said casing around said passage, a protecting cover detachably secured to said .flange over said passage, a yoke pivotally supported in the chamber formed between said flange and said cover, a flexible water tight connection between said yoke and said casing,l said armature being connected to said yoke through said passage and a striker external to said casing connected to said yoke.

4. In an electric bell construction, a cas.

ing, a pivoted yoke, an armature inside said casing depending from said yoke,a flexible impervious disk-like connection between said yoke and said casing and a striker also depending from said yoke and outside of said casing, the pivotal axis of said yoke and the axis of flexure of said disk-like connection being `substantially coincident.

5. ln an electric bell construction, a casing, a transmitting lever extending through a wall of said casing, a resilient duplex metallic diaphragm connecting said lever to said casing and extending substantially parallel with said wall, a striker connected to said lever and a pivotal support for said striker.

G. Electrical apparatus comprising a casing containing the parts to be protected, a pivoted yoke, a flexible connection between said yoke and said casing comprising a pair of' connected oblong disks having their short median axis substantially coincident with the piv'otal .axis of the yoke and means for tilting said yoke.

7. Electrical apparatus comprising a casing containing the parts to beprotected, a pivoted yoke, an oblong elastic connection between said yoke and said casing and having its natural axis of flexure substantially coincident with the pivotal axis of said yoke and means for tilting said yoke.

8. Electrical apparatus comprising a casing containing the parts to be protected, a transmitting lever passing through Va wall of said casing, a flexible connection between said casing and said lever including a thin, elastic, metallic disk, a pivotal guide for said lever having its axis substantially co incident with the axis of flexure of said flexible connection and means for actuating said transmitting lever. i

9. Electrical apparatus comprising a casing containing the parts to be protected, a transmitting lever passing through a wall of said casing, a flexible connection between said casing and saidl lever including a pair of thin disks connected at their peripheries, a pivotal guide for said lever having its axis substantially coincident with the axis of flexure of said flexible connection and means for actuating said transmit-ting lever.

l0. An electrical signal mechanism in'- cluding a magnet, an armature therefor, an inclosing box, a. transmitting level', an elas tic, metallic connection between said lever and box affording a tight joint and a guiding pivot having its axis substantially coincident with the axis of flexure of said connection, and a striker connected to said armature through the medium of' said transmitting level'.

11. An electric signal mechanism including a magnet, an armature therefor, contacts in said magnet circuit and operated by said armature, a box inclosing said armature, a flexible connection4 between said armature and box including a thin, elastic, metal disk supported at its periphery by said box and connected with the armature to form a flexible connection between said armature and the box, a striker external to the box and actuated by said armature and pivotal means for guiding said armature in one plane.

12. An electric signal mechanism including a magnet, an armature therefor, contacts in the magnet circuit and operated by said armature, a box inclosing the parts to be protected, a flexible support for said. armature comprising a pair of thin disks connected at their peripheries, one disk being carried by said box and the armature being carried by the other disk, a signal striker external to the box and actuated by said armature and pivotal means for guiding said armature in one plane.

13. An electric signal mechanism comprising an electromagnet, an armature therefor,

contacts in the magnet circuit and operated by said armature, a box inclosing the parts to be protected, a lever operated by said armature, a fiexible and elastic disk connection between said lever and said box aifording a tight joint, a pivotal guide for said lever external to said box and limiting said lever to vibration in a given plane and a striker operated by said lever.

14. Electrical apparatus comprising the combination of a casing containing the parts to be protected, a lever for transmitting motion through a wall of said easing, a flexible metallic disk -like connection between said lever and said casing and pivotal means for limiting the oscillation of said lever to a given plane.

15. In combination, a casing provided with an opening in the wall thereof, a lever for transmitting motion through the opening in the wall of the casing, a flexible diaphragm connecting the lever and the wall of the casing for yieldingly supporting said lever and pivotal means for limiting the oscillation of said lever to a given plane.

16. In combination, a casing provided with an opening in the wall thereof, a lever for transmitting motion through the opening in the wall of the casing, a flexible diaphragm connecting the lever and the wall of the casing for yieldingly support-ing the lever and guiding means connected with the lever and pivoted substantially in. the plane of the diaphragm for limiting the oscillation of the lever to a given plane.

HENRY E. REEVE.

lVitnesses R. S. ALLYN, MARCUS M. ScnnNx.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

